Guillermo Ramirez
- Medicare services, 2024
- 441
- Medicare patients, 2024
- 191
- Part D claims, 2024
- 99
- Hospital affiliations
- 2
- Industry payments
- $22
- Practice address
- 1555 Soquel Drive, Santa Cruz, CA 95065
- Practice phone
- Call (831) 462-7700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Guillermo Ramirez's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Guillermo Ramirez is a hospitalist in Santa Cruz, California
Guillermo Ramirez practices at Dignity Health - Dominican Hospital in Santa Cruz, California, part of CommonSpirit Health.
Guillermo Ramirez's NPI, 1740623883, was assigned on April 8, 2013. Guillermo Ramirez graduated from UCSF School of Medicine in 2013. Guillermo Ramirez holds California license A135768.
- NPI
- 1740623883NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345532685
- NPI enumeration date
- April 8, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (831) 462-7700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Guillermo Ramirez practices at Dignity Health - Dominican Hospital in Santa Cruz, California
Guillermo Ramirez's primary practice is Dignity Health - Dominican Hospital, at 1555 Soquel Drive, Santa Cruz, CA 95065 in Santa Cruz County. The practice phone is (831) 462-7700.
- Dignity Health - Dominican Hospital1555 Soquel Drive, Santa Cruz, CA 95065 · Santa Cruz CountyPhone(831) 462-7700
Source: Dmand AI Affiliation Data
Guillermo Ramirez is affiliated with 3 sites of care and 1 medical group
Guillermo Ramirez's primary practice is Dignity Health - Dominican Hospital in Santa Cruz, California, part of CommonSpirit Health. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Guillermo Ramirez to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Guillermo Ramirez's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Guillermo Ramirez practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - Dominican Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Guillermo Ramirez is one of 3,186 hospitalists in California
Hospitalist is Guillermo Ramirez's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Guillermo Ramirez is board certified in internal medicine by the American Board of Internal Medicine. Guillermo Ramirez is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Clinical focus
Dmand AI lists acute respiratory failure, cardiac arrhythmia, cellulitis, congestive heart failure, electrolyte disorders, gastrointestinal bleeding, gastrointestinal infection and gastrointestinal obstruction among the conditions Guillermo Ramirez treats.
Hospitalists near Guillermo Ramirez
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Guillermo Ramirez billed Medicare for 441 services in 2024
CMS data shows 441 Medicare services from Guillermo Ramirez across 4 procedure codes in 2024, for 191 Medicare patients. Medicare paid $45,512 for them. Every service was in a facility, such as a hospital, rather than an office.
Guillermo Ramirez's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4822024: 4419%
Guillermo Ramirez compared with the California median for hospitalists, 2024
- Guillermo Ramirez
- California median
- Medicare services
- 441vs 430Close to median
- Medicare patients
- 191vs 201Close to median
- Part D claims
- 35vs 6949% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Guillermo Ramirez's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Guillermo Ramirez treated 191 Medicare patients in 2024, average age 77
CMS counts 191 Medicare patients who saw Guillermo Ramirez in 2024. The largest group is 75 to 84, with 78 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 2.41, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Guillermo Ramirez's median patient age at 76, with 41% women.
Guillermo Ramirez's Medicare patients by age, 2024
Guillermo Ramirez's Medicare patients by sex, 2024
- Women10756%
- Men8444%
Chronic conditions among Guillermo Ramirez's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Atrial fibrillation46%
- Mood disorders45%
- Anxiety42%
- Depression41%
- Heart failure41%
Share of Medicare patients with each condition. A patient can have several.
Guillermo Ramirez's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women41%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Guillermo Ramirez wrote 99 Medicare Part D claims in 2024
In 2024, Guillermo Ramirez wrote 99 Medicare Part D claims for 45 patients. 87% of them were for generic drugs. CMS names the drug for 35 of them, across 3 drugs with 11 or more claims each, at $525 in total drug cost. In 2020, CMS named 11 claims across 1 drug.
Guillermo Ramirez's Part D claims by kind of drug, 2024
- Generic86 claims87%
- Brand-name and other13 claims13%
Guillermo Ramirez's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Guillermo Ramirez's Part D claims, 2024
- Antibiotics23%23 of 99 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2020 to 2022
- 2020
- 2022
- Claims for drugs CMS names
- 2020: 112022: 35218%
Drugs named by CMS: 3 in 2022, 1 in 2020.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Guillermo Ramirez takes part in Medicare
Guillermo Ramirez accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Guillermo Ramirez received $22 in industry payments in 2016
CMS Open Payments shows 1 general payment to Guillermo Ramirez from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $22.
Companies that paid Guillermo Ramirez the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Guillermo Ramirez graduated from UCSF School of Medicine
Guillermo Ramirez graduated from UCSF School of Medicine in 2013.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Guillermo Ramirez accepts plans from 13 insurance carriers
Guillermo Ramirez is in network with 13 carriers, including United Healthcare, Aetna and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- United Healthcare
- Aetna
- Elevance
- Alliant Health Plans
- Blue Cross Blue Shield of Michigan
- HCSC
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +5 more carriersWith a free account
Plan types Guillermo Ramirez accepts, by number of carriers
- PPO8
- HMO6
- POS4
- EPO3
- Medicare2
Source: Dmand AI Insurance Network Data
Sources for Guillermo Ramirez's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Guillermo Ramirez
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Guillermo Ramirez's NPI number?
Guillermo Ramirez's NPI number is 1740623883. It was assigned on April 8, 2013, and it is active in the NPI Registry.
What does Guillermo Ramirez specialize in?
Guillermo Ramirez is a hospitalist in Santa Cruz, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Guillermo Ramirez practice?
Guillermo Ramirez practices at 1555 Soquel Drive, Santa Cruz, CA 95065. Guillermo Ramirez's primary practice is Dignity Health - Dominican Hospital in Santa Cruz, California, part of CommonSpirit Health. Dmand AI also links Guillermo Ramirez to 1 hospital and 1 group practice or clinic.
What is Guillermo Ramirez's office phone number?
The practice phone on file for Guillermo Ramirez is (831) 462-7700.
What is Guillermo Ramirez's medical license number?
Guillermo Ramirez holds California license A135768.
Which hospitals is Guillermo Ramirez affiliated with?
Guillermo Ramirez practices at Dignity Health - Dominican Hospital in Santa Cruz, California. Dmand AI links Guillermo Ramirez to 1 more hospital.
What medical group is Guillermo Ramirez part of?
Guillermo Ramirez is linked to Palo Alto Foundation Medical Group.
Does Guillermo Ramirez accept Medicare?
Yes. CMS data shows Guillermo Ramirez billed Medicare for 441 services in 2024, and Guillermo Ramirez accepts Medicare assignment.
How many Medicare patients does Guillermo Ramirez see?
CMS counts 191 Medicare patients who saw Guillermo Ramirez in 2024, with an average age of 77.
Is Guillermo Ramirez board certified?
Yes. Guillermo Ramirez is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Guillermo Ramirez bill to Medicare?
In 2024, Guillermo Ramirez's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99239).
Where did Guillermo Ramirez go to medical school?
Guillermo Ramirez graduated from UCSF School of Medicine in 2013.
What drugs does Guillermo Ramirez prescribe most?
In 2022 Medicare Part D data, Guillermo Ramirez's most prescribed drugs by claims were Metoprolol Succinate, Amoxicillin-Clavulanate Potass and Pantoprazole Sodium.
Has Guillermo Ramirez received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Guillermo Ramirez from 1 company from 2016 to 2016. The largest total came from Sanofi and Genzyme US Companies.
How long has Guillermo Ramirez been practicing?
Guillermo Ramirez graduated from medical school in 2013, 13 years ago.
What insurance does Guillermo Ramirez accept?
Guillermo Ramirez is in network with 13 carriers, including United Healthcare, Aetna and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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